Shield for hollow articles in sand-blasting.



L. BUGSKO. SHIELD FOR HOLLOW ARTICLES IN SAND BLASTING.

APPLIGATIDN FILED FEB. 2, 1910.

Patented Nov. 29, 1910.

THE'Ncni-ls :SYERS 6a., WAsu/Ncfcn. L. c

LEOPOLD BUOSKO,

STATS FFlGE.

MONACA, PENNSYLVANIA.

SHIELD FOR HOLLOW ARTICLES IN SAND-BLASTING.

1 To all whom "it may concern:

Be it known that I, Lnoronn BUosKo, a resident of Monaca, in the county of Beaver and State of Pennsylvania, have invented a new and useful Improvement in Shields for Hollow Articles in Sand-Blasting; and I do hereby declare the following to be a full, clear, and exact description thereof.

My invention relates to shields for hollow articles in sand blasting, and has special reference to a shield for protecting a portion of the inner wall of a hollow glass article during the sand-blasting or frosting of another portion of the same.

The object of my invention is to provide a cheap, simple and efficient shield for hollow glass articles, which can be easily inserted to place within the article and withdrawn therefrom, and when in position will cover or protect a portion of the inner wall of the article, so that the balance or another portion of such wall can be frosted by the usual sand blasting process.

To these ends my invention consists, generally stated, in the novel shield and arrangement of the same, as hereinafter more specifically set forth and described and par ticularly pointed out in the claims.

To enable others skilled in the art to which my invention appertains to construct and use my improved shield for hollow glass articles in sand blasting, I will describe the same more fully, referring to the accompanying drawing, in which- Figure 1 shows a sectional view of an ordinary glass ball globe having my improved shield applied in position for frosting the mouth end of the same. Fig. 2 is a like view of such ball globe showing the frosted portion thereon. Fig. 3 is a similar view of such globe showing another form of the shield in position for frosting the opposite end of the globe. Figs. 4, 5 and 6 are sectional views of stalactite forms of glass globes showing the shield in position therein for frosting the end portion of the same opposite the mouth. Fig. 7 is a sectional view of another form of a ball globe showing two shields in position within the same for frosting the central portion thereof.

Like symbols of reference herein indicate like parts in each of the figures of the drawing.

As illustrated in Figs. 1, 2 and 3 of the drawing, 1 represents the ordinary glass globe of ball form havlng the usual flared Specification of Letters Patent.

Application filed February 2, 1910.

Patented Nov. 29, 191%.

Serial No. 541,659.

mouth 2 at one end of the same, and 3 is the hollow shield for use within the same, which is formed of suitable flexible material, such as rubber, and of cone shape.

lVhen it is desired to frost the one end of the globe 1, such as the mouth end portion of the same, the shield 3 of the form shown is inserted through the mouth 2 of such globe by bending the same and is then placed in position, so that the outer edge of the same is against the inner surface of such globe, such as is shown in Fig. 1, by any suitable pointed instrument. After the shield 3 is thus in position, the usual sand blasting device is inserted in the mouth 2 of the globe 1 and the inner surface of such globe at such month end is frosted thereby to the outer edge A of said protector such as is shown at a in Fig. 2. After such portion of the globe 1 has been so frosted, the sand blasting device is removed through the mouth 2 of such globe, and then the shield 3 can be removed through such mouth by starting the outer edge A of the same toward such month, so that such edge can thenbe grasped by the hand and the shield bentand drawn out of the globe through the mouth.

lVhen it is desired to frost the end of the globe 1 opposite the mouth 2 of the same, the shield 3 is of the conical form shown in Fig. 3 and is provided with the opening or mouth 3 in the apex of the same, so that when it is placed in position, as shown in said figure through the mouth 2 of such globe, the mouth 3 of the same will extend into said globe mouth 2, and the outer edge 1 of the same will be placed against the inner surface of such globe by the pointed instrument. After the shield 3 is thus in position the sand blasting device can be inserted in the globe 1 through the mouth 3 on the shield therein, and the portion of the inner surface of such globe opposite the mouth 2 of the same frosted to the outer edge 4: of such shield, after which the sand blasting device can be withdrawn through said mouth 3 and then the shield 3 can be removed from the globe 1 through .its mouth 2 by the hand.

In the stalactite forms of globes, such as is shown in Figs. 4, 5 and 6, the ends of the same opposite their mouths can be frosted in like manner, as just described, and with the form of shield such as is shown in Fig. 3, or the mouth ends of the same can be frosted by the use of the shield shown in Fig. 1.

In Fig. 7, the globe being of ball shape and provided with a mouth at each end of the same, two of the shields are used, and of the same shape, as shown in Fig. 3, so that when they are in position within such globe the mouths of the same will extend into the mouths of the globe, and then the inner central portion of the globe between such shields can be frosted to the edges 4 of such shields by the insertion of the sand blasting device through either or both mouths on the protectors, but if desired only one of such shields can be used and the other portion of the globe frosted.

It will be evident that the end of the shield which marks the point or position on the inner wall of the article for the frosting by the sand blast can be formed in any desired shape, so as to form suitable designs thereby in such frosting, and it can be used on other articles than glass in sand blasting or frosting, while other shapes of hollow glass articles and different inner portions of the same can be frosted, treated, or operated upon as desired.

Various other modifications and changes in the design, material and construction of my improved shield may be resorted to, without departing from the spirit of the invention or sacrificing any of its advantages.

It will thus be seen that in the use of my improved shield for hollow glass articles in sand blasting it will enable the desired portion on the inner surface to be frosted easily and quickly and will do away with the frosting of the outer surface of these articles, which is objectionable by reason of such frosted surfaces becoming greasy and dirty when in use to render them unsightly and requiring unusual efforts and means to keep the same clean. The shield can be quickly and conveniently placed in position in the article and removed therefrom, will not be liable to become injured through usage or displaced when in position by reason of its tendency to suction against the glass, and will act as a protector or covering for the portion of the article not being frosted, as well as forming a line of demarcation for the frosting by the outer or end edges of the same. i

lVhat I claim as my invention and desire to secure by Letters Patent is 1. A protecting device used in sand blasting hollow glass articles which have an opening within the same of smaller diameter than the body, which consists of 'a removable tlexible shield adapted for insertion within such article through said opening and having its outer edge contacting with the inner surface of the article so as to cover a portion of said article by such shield and thereby permit another portion of such article to be operated upon.

2. A protecting device used in sand blasting hollow glass articles which have an opening within the same of smaller diameter than the body, which consists of a removable flexible hollow shield of conical shape adapted for insertion within such article through said opening and having its large end contacting with the inner surface of the article so as to cover a portion of said article by said shield and thereby permit another portion of such article to be operated upon.

3. A protecting device used in sand blasting hollow glass articles which have an opening within the same of smaller diameter than the body, which consists of a removable flex ible shield adapted for insertion within such article through said opening and having its outer edge contacting with the inner surface of the article so as to cover a portion of said article by such shield and thereby permit another portion of such article to be operated upon, said shield having an opening through the same.

4. A protecting device used in sand blasting hollow glass articles which have an opening within the same of smaller diameter than the body, which consists of a removable flexible hollow shield of conical shape adapted for insertion within such article through said opening and having its large end contacting with the inner surface of the article so as to cover a portion of said article by said shield and thereby permit another portion of such article to be operated upon, said shield having an opening through the apex of the same.

In testimony whereof, I, the said LEOPOLD BUosKo, have hereunto set my hand.

LEOPOLD BUCSKO. l Vitnesses J. N. Coons, WM. R. MoCoMMoN. 

